Disk-sharpener.



No. 718,966. PATENTED JAN. 20, 1903.

A. H. GRIMM. DISK SHARPENER.

APPLIUATION FILED 00124, 1902. N0 MODEL. 2 SHEETS-SHEET l.

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1 10. 718,966. PATENTED JAN. 20, 1903. A. H. GRIMM. DISK SHARPENER.

7 APPLICATION FILED 00124, 1902. N0 MODEL.

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UNITED I STATES PATENT OFFICE.

A SMUS HENRY GRIMM, OF ROCK ISLAND, ILLINOIS. J

DlSK-SHARPENER.

SPIEGI FIGAJIION formingpart of Letters Patent No. 718,966, dated January 20, 1903 Application filed October 24, 1902. Serial No. 128,617. (No model .To all whlmn zit may concern: I

Be it known that I, ASMUS HENRY GRIMM, of

Rock Island, in the county of Rock Island and This invention an improved grindingmachine especially'designed -for sharpening the disksof disk barrows, and it is intended to provide a machine which will sharpen the disks and not'm'erely scrape them, as is done by some machines heretoforeused.

The principal object of the invention isto provide a portable machine which can be readily attached to a disk harrow and used to sharpen the disks thereon without removing the disks from .the barrow-frame;

In using machines heretofore employed for grinding barrow-disks it has been necessary to remove the disks which were to be sharpened from the barrows, which in volved a good deal of time and labor, while by my-inven-' tion the disks may be sharpened without removing them from their place in the harrow.

Disk barrows ordinarily consist of a series of disks in axial alinement and are ordinarily fastened together by means of athrough-bolt and spaced apart by sleeves inserted between adjoining disks, o

My improved sharpener comprises a supporting collar which may be detachably fastened on the axle or sleeve of the harrow between the disks, a support detachably connected to said collar, so it can be swung around the'disks, a frame adjustably atfor'regulating the depths of cut of the grindtached to said support, and grindingwheel or disk rotatably. journaled'in said frame, mechanism for rotating said disk, and means ing-disk, the whole apparatus being such that the operator can attach the machine-to -the harrow adjacent to any disk or disks which it is desired to sharpen, He can then grind the edges of said disks readily and easily, it only being-necessary to movethe harrow occasionally; so as to bring any unground edges of the'disk into position to be operated upon by the machine.

esire protection.

- an enlarged sectional view of the support and spring regulating device. Fig. 7 is asimilar view of the other regulating device.

The machines may he made of different; sizes. I prefer to make two sizes thereof, one of whichwill operate on disks from fourteen to twenty inches in diameter and the other on disks of over twenty inches in diameter.

The machine is so constructed that it can be used eilher on the inner or outer edges of the disks but, preferably operates on the outer convex sides thereof, as indicated in the drawings.

The invention will be fully understood from the following detailed description, in connection with the drawingawhich illustrate a practical form otthe-nutchine and the manner ofsusing same. Iiionot wish, however, to confine myself to the specific construction of parts shown, as they can be readily changed within the scope of the invention, and I refer to the claims for summaries of the"e's"sential parts and features of the invention for which u said drawings, Figure l a side view of a portion of a disk harrow, showing the machine adjusted to sharpen the right-handdisk. Fig. 2 is a similar view-showing the machine adjusted to sharpen-the left-hand disk; ,Fig. 3 is an enlarged plan view of the machinedetached'from the collar. Figniis an enlarged perspective view of the supportand the adjustable devices ,for regulating the depth of cut. ,Fig. 5 is an enlarged sectional view'through the collar and yoke}? Fig. 6 is As illustrated in the drawings, the machine comprises a collar adapted to be detachably fastened to the disk sleeve oraxle, a yoke detachably engaged with the collar, a standard pivotally attached to'the yoke,agrinding mechanism adj ustably attached to the standard, and devices for regulating the depth of cut of grinding-disk. A

The collar or is composed of two similar sec-' tions a ,'w11ichcan be clamped together upon the, sleeve 8 :of the harrow, as indicated in the drawings, adjacent to one of the disks'S thereon which it is desired to sharpen. "The parts of the collar may be secured. together by means of bolts b and thumb-screws b. The collar is also. provided witha circumferential groove (1 and at diametrically opposite ICO ' pull! ts with L-lugs difora purpose hereinafter explained.

The yokec is adapted to loosely embrace the collar a and fit within the groove a'-thereof- 5 and is provided with aljlange c, which 'orks under the'lngs a and is thereby held to thecollar except when the yoke is turned to a position perpendicular to the plane ofthe two L-l'ugs. To the stem 0 of the yoke isattached I0 aslotted standard d, havinga perforated lug d on its lower end connected tcthe stem 0? toward or from the collar to suit varioussizes' of disks. The frame 2 may be provided with flanges 6 which embrace the sides of the standard d and prevent the frame e turning on bolt (1 Within the frarne e is'journaled a shaftf, on which is mounted a grindingdiskf, of any suitable material. On one end of this shaft is a small pinion f which meshes with the driving-gearg on a shaft g,-

jonrnaled in the fraine e, and. is provided with a handle g by which it can be rota-ted by hand. The frame 2 is also provided with a handle 6 bywhich it can be guided, so as to' control the action of the grinding-disk.

A device for regulating-the depth of the cut of the grinding-disk is attached to the .standard d. Two such-devices are shown,

one being employed when the machine is op-- 5 erated in theupright positioh, Fig. 1, and the I other when the machine is operated in the horizontal position, Fig. 2. The firstof these devices consists of a guide-casting h, adjustably attachedto the standard d belowframe 40 e by the bolt 72. This guide stands at right angles to thestandard. Adjustably mounted on the guide is a castingz', having side flanges 2", which embrace the sides'of the guide. Gasting@' is adjustably secured to the guide by means of the bolt h, engaging slots in the guideand casting, asshown in Fig. 6. From the casting 1' project perforated lugs i in which'is guided a boltj, which is projected outwardly by means of a springj, interposed between a shoulder j on the bolt and the inner lug i The bolt is confined in place by means of ringj or other suitable device. The other controlling device consists of a finger is, which projects at right angles to-standard cl and lies close beside the grinding-wheel andon the side opposite boltj. This finger k is attached to a plate it, provided with t flanges k embracing the sides of the stand- I ard d and adjustably secured to this standard by means of a bolt The slot-and-bolt connections of these regulators and standard enable them to be adjustedon the standard 61, so as to regulate the depths of the cut made by the grinding-bolt with great nicety.

When the apparatus is used to sharpen the disks, as indicated in Fig. l, the collar'is faserated upon, ,handdisk; as indicated in Fig. 2, a supple- .tenedto the axle or hubof thedi'sk,"the yoke slipped on the collar, and the frame and standard raised ,to substantially vertical position, the frame being upheld in operative position JO by one. hand of the operator, and with; the other .hand'the .ofperatorltn'rn'sj the drivinggear gand' draws the frame toward the disk,

so as to bring the grinding-disk into contact with the edge .ofthe barrow-disk and'grinds15 the latternuntil the bolt 7' p'r'ev'en ts the further .eifective operation of the-grindiog-disk. The operator shifts the'machine-right o r left by swinging it around, on the collarlun'til the upper' portion bf the Harrow-disk 'issufiiciently- 8osharpen'ed. Then I by moving the barrow bodily he can bringup any unsharpened portion of the barrow-disk into position to be op- Whenrdperating onthe left-,l

mentaryist'andard m is employed. This is simply a casting thelower end of which is attached to the stem 0 by means of the bolt.

0 while the'lugd of cas'tingd isadjustably attached to the-upper slotted portion of the, o standard m by means of the bolt m, passing 7 through log df 'of standard dand theslot m in casting This enablesithe. collar to be secured on the sleeve .adjacent to thileft Y\ hand harrow-disk and the standard (11 and frame 6 to be loweredto a horizontal position and bring the grinding-disk f-againstthe outertface' of the left-hand disk,;as indicated in Fig. 2, where it is manipulated-substantially as above describedto sharpen the edges -roof of the barrow-disk, the depths of cut ofthe grind tug-disk fbeingnow regulated by means ofthefingerku- From the foregoing descriptiomin connection with the drawings, the operation-of the m5 apparatus will be sufiiciently clear,and it will 1 be noted that the machinecanbe readily applied to any portion of 'the'harrowzyand used upon any disk thereof without havingto dis-- connect the latter from 'the'harrow-frame. no

' The machinecan be. readily applied to ,or'de tached fromthe barrow and, can .be used wherever the harro'w may begin the fielder I barn; The machine beingsmall-can'be readily transported-and does not require-anypar- 1 x 5 ticnl-ar' skill or power in 'its"-0peration. It will also be observed that variousfchanges can be made-in the form, and constructionof, the several parts of the machine, so that'itsgeneral appearance might be wholly-changed, I m l While retaining all the essential features of the invention. Such variations Ifconsider within the scope of my invention and claims, The machine may'al'so be utilized for sharpening other implements, and I do not restrict myself to specific use thereof herein set forth. Having t'hnsdescribed my invention, what I therefore claim as new, anddesire to secure by-Letters Patent thereon,'is--- l. A machine for sharpening disk barrows, 13o

comprising astandard, adaptedtobe detachably supported upon thesleeve-or shaft ofa disk harroiv,-a frame adjust-ably supported axleof the 'h'arrow adjacent to the disk to be on said standard, a grinding-disk journaled in said frame and means for rotating said disk.

2. In combination a standard, means for supporting said standard nponthc hnh or axle adjustably attached to said standard, a grinding-disk mounted on'said frame, and a device for regulating the depths of the cut of the grinding-disk adjust-ably attached to said standard. I Q

- 4. A machine forsharpening disk harrows,

comprising a standard, means for detachably supporting it upon the sleeve'or shaftof a disk barrow, a frame attached to said standard, a grinding-disk journaled in said frame, means for rotating said disk on'said frame,

and a manipulatinghaudle attached to said frame. t. v

5. In a harrow-disk sharpener, the combination of a yoke detachahly attached to the disk, sleeve oraxle, a slotted standard mounted on said frame, and adevice for regulating the depths of the cut of the grinding-disk, said devicecomprising a guide-piece adjustably attached to the standard and a springbolt adjustably attached to said guide-piece. 6. In a machine for sharpening harrowdisks, the combination of a collar adapted to be detachably attached to the hub, sleeve or a axle of the harrow adjacent to thedisk to be sharpened, a standard detachabl y attached to said collar, a frame adjustably attached to said standard, a grinding-disk journaled in said frame, and gearing for rotatingsaid disk in said frame. A

c 7. In a machine for sharpening harrowdisks, 'thecombination of a collar adapted to be detachably attached to the hub, sleeve or axle of the barrow adjacent to the disk to be sharpened, a standard detachably attached to said collar, 3. frame adjustably attached to said standard, a. grinding-disk jourualed in said frame, and gearing'for rotating said disk in said frame, with a device for regulatingstandard attached to said casting, a frame attacnedtosaid standard, a grinding-disk journaled in said f rame. and gearing for rotating said disk.

9. A machine disk barrows, comprising a yoke, means for detachably securing said yoke to the hub or I for sharpening the disks orsharpened, a casting attached to said yoke, a standard attached to said casting,,a frame attached to said standard, a' grinding-disk journaled in said frame, and gearing for re rating-said disk; with a device for-regulating the depths of cut made by the grinding-disks adjhstably attached tothe standard adjacent to the frame.

10; In a machine for sharpeningdisk harrows, the combination of a grooved collar detachably attached to 'the hub, sleeve or axle of the narrow adjacent to tlie disk to be sharpened, a yoke detachabhy attached to said collar, a standard attached to said yoke, a frame adjnstabl y attached to said standard, a. grinding-disk jonrnaled in said frame, and gearing for rotating said disk mounted in said frame.

ll. Amachineforsharpeningdiskharrows, comprising a standard, means for detachably supporting it upon the sleeve or shaft of the harrow, a. frame adjustably connected with said standard, a grinding-disk journaled in said frame and gearing on said frame for ret'ating said diskya manipulating-handle attached'to said frame, and a device for regn lating the cut of thegrinding-disk attached to said standard.

12. I a barrow-disk sharpener the combination of a yoke adapted to be supported on the disk sleeve or axle, a slotted standard at-- tached' to said yoke, a. frame adjustably attached to said standard, .a grindingdisk.

harrow,'a frame'attached to said standard, a

grinding-disk journaled in said frame, means for rotating said disk on said frame, a manipulating-handle attached to said frame, and a. device for regulating the cut of the grindingdisk adj ustably attached to said standard.

14. In a machine for sharpening disk harrows,'the combination of a grooved collar adapted to be removably attached to the hub sleeve or axle of the hermit adjacent to thedisk to be sharpened, a yoke detachably attached to said collar, a'slotte'd standard attached to said yoke, a frame adjnstably attached to said standard, a. grinding-diskjournaled in said frame, gearing for rotating saiddisk mounted in said frame, and handles for guiding said frame and rotating said disk.

15. In a disk-barrow sharpener the combination" of a yoke adapted to be supported on the disk sleeve, a slotted standard attached tosaid yoke, a frame adjn'stably attached to said-standard,.a grindingedisk and gearing for rotating said disk mountednn said-frame, and a device for regulating'the depths-0t the out of the grinding-disk,- said device comprise ing a guide-piece adjustably attached to thei standard, a casting adjustable ou'said guide;

piece and a spring-actuated bolt guided in lugs on said-casting. i r

16. A machine for sharpening barrow-disks comprising a yoke, means for detachably securing said yoke to the hub or axle of the barrow adjacent to the disk to be sharpened, a slotted casting adj nstably attached to said yoke, a slotted standard adjustably attached to said casting, a frame adj ustablylattached to said standard, a grinding-disk:jo'urnaled in said frame, and gearing for rotating said disk jonrnaled on said frame. 17. A machine for sharpening barrow-disks comprising a yoke, means for detachably;;securing said yoke to the hub or axle of'the harrow adjacent to the disk to be sharpened, a slotted casting'adjustably attached to said yoke, a slotted standard adj nstably attached to said casting, a frame adjustably attached to said standard, a grinding-disk'journaled in said frame, and gearing for rotating said disk journaled on said frame; with devices for regulating the depths of cut made by the grinding-disks adjustabl y attached to, the

standard adjacent to the frame. r

18. A machine for sharpening the disks of disk barrows, comprising a split-collar adaptadjacent to -the disk to be sharpened, a slot-- ted standard adj u's'tab'ly attached to said coliar, a frame adj nstgably attachedto said standard, a grinding-disk journaledin'sa'idframe,

on said frame. v

:19. A machine for sharpening'the disks of disk barrows, comprising a'yoke," asp1it c01- ened having a circumscribed groove adapted tobe engaged by said yoke, a' slotted casting adj nstabiy attached to said yoke, 19. slotted standard. attached to said casting, a'frame adj ustably'attached to said stan dard, a grinding-disk journal'ed in said frame, and-gearing for rotating said-disk journ-aled on said frame.

and gearing for rotating said diskjourxialed,

'lar attached to. embrace the axle or hub of f' i the harrow adjacent to the diskto be sharp- =In testimonythat I claim we foregoing as my own I affix -mys'ig'natnrein presence of two witnesses. H 'AsMUs HENRY .GRIMM.'

Witnessesz' J.- SIL S LEAS,

M UDE M; Slang;- v 

